Hi, I’m new here. I’ve had a new pair of M4 Sapphires for 8 months and have put approximately 150 hours on them. They replaced a pair of PSB Imagine T3 speakers that I had owned for almost 8 years. I had been very happy with the PSBs, with one exception: bass. Not the quantity, but the quality in my room. Try as I might, I couldn’t get a good combination of depth, impact and tightness. I had heard the M4s at the Capitol Audiofest in 2021 (IIRC) and was very impressed with them. So when I saw an ad for a brand new pair direct from the factory last June, I jumped on them. I’ll post a detailed review, but I’ll tease this much in this post: they sound wonderful in my room.